Baroness Barbara Young, from the charity Diabetes UK, said: "The report shows that without urgent action, the already huge sums of money spent on treating diabetes will rise to unsustainable levels that threaten to bankrupt the NHS."

"If this rise in diabetes is allowed to continue, as is happening at the moment, it will simply be disastrous for the NHS and wreck NHS budgets. I think we have a car crash coming.

She added that the fact that 80% of NHS spending was on complications caused by the condition was "hugely wasteful".

"We need to stop this now and make sure people get the right sort of care early on in their condition."